| A | B |
|---|
| activation energy | the energy needed to start a reaction |
| catalyst | certain chemical substances that reduce the amount of activation energy |
| endergonic reaction | reactions that involve the net absorption of free energy. (Gets colder) |
| energy | the ability to do work or cause change |
| enzyme | a catalyst found in a living thing |
| exergonic reaction | reactions that involve the net release of energy |
| free energy | the energy in a system that is available to fuel cell processes |
| oxidation reaction | an reaction in which a reactant loses one or more electrons. |
| product | shown on the right side of a reaction these are what is produced |
| reactant | shown on the left side of an equation, these are what is needed in the reaction |
| redox reaction | oxidation-reduction reactions |
| reduction reaction | when a reactant gains one or more electrons in a reaction. |
| state | solid, liquid or gas |
